Business acquisition cost of acquired entity working capital.

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- Definition

Period of product sales agreement.

+ Details

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- Definition

Reimbursement amount received on working capital adjustment.

+ Details

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- Definition

Related party transactions.

+ Details

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- Definition

Amount of cash paid to acquire the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph f(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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- Definition

Costs of sales and operating expenses for the period incurred from transactions with related parties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2)

-SubTopic 10

-Topic 225

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Related Party Transactions (Details) (USD $) In Thousands	3 Months Ended	12 Months Ended		12 Months Ended
Related Party Transactions (Details) (USD $) In Thousands	Mar. 31, 2009	Sep. 30, 2011	Sep. 30, 2008	Sep. 30, 2011 General Partner Expense [Member]	Sep. 30, 2010 General Partner Expense [Member]	Sep. 30, 2009 General Partner Expense [Member]	Sep. 30, 2011 UGI Corp Expense Reimbursement [Member]	Sep. 30, 2010 UGI Corp Expense Reimbursement [Member]	Sep. 30, 2009 UGI Corp Expense Reimbursement [Member]	Sep. 30, 2011 UGI Corp Office Insurance Reimbursement [Member]	Sep. 30, 2010 UGI Corp Office Insurance Reimbursement [Member]	Sep. 30, 2009 UGI Corp Office Insurance Reimbursement [Member]	Sep. 30, 2011 Energy Service Atlantic Energy Purchase [Member]	Sep. 30, 2010 Energy Service Atlantic Energy Purchase [Member]	Sep. 30, 2009 Energy Service Atlantic Energy Purchase [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party				$ 363,392	$ 350,246	$ 355,043	$ 10,805	$ 10,757	$ 12,183	$ 3,184	$ 2,296	$ 3,344	$ 4,073	$ 39,807	$ 24,302
Related Party Transactions (Textuals)
Product sales agreement extended termination period		5 years
Purchase price of Penn Fuel Propane, LLC			32,000
Working capital paid to acquire assets			1,621
Reimbursement Amount Received on Working Capital Adjustment from UGI Utilities	$ 1,352